Windfall Profits Tax passes

The Mongolian government passes a 68% “Windfall profits” tax, the highest in the world, on copper in excess of USD 2600/tonne and gold USD500/ounce[1]. The purpose of which is to increase valued added processing within Mongolia.
[1] https://minerals.usgs.gov/minerals/pubs/country/2006/myb3-2006-mg.pdf retrieved 7 September 2018